Pantech G200 Service Manual page 18

G200 Service Manual
is 942.5±17.5MHz for EGSM bands, 1842.5±37.5 MHz for DCS bands and transmits it to dual saw
filter. The Tx filter passes through the output signals of frequency band that is 897.5MHz ±17.5MHz
for EGSM bands, 1747.5 ±37.5 MHz for DCS bands from the power amplifier and transmits it to the
antenna. The maximum insertion loss is about 0.8 dB for the receiving bands at 25
1.35 dB for the transmitting bands at 25
B. SAW filter (BPF / Band select filter): Z510, Z512
The Z510 filter is for the EGSM band signals which range 942.5±17.5MHz with low insertion loss.
And the Z512 filter passes the DCS bands that cover 1842.5 ±37.5MHz.
These filters degrade other band signals with high passing loss of 30~60 dB. The EGSM and DCS's
maximum insertion loss is 3.2 dB.
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C.
Fig.4-7. Receiver part PCB Layout
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